I am putting in a water filter for my ag water line. I need to put it in a
large sized box, the kind usually associated with water sprinkler valves.
In the wintertime, how much protection do these afford to a filter full of
water? They don't turn off the water completely, just reduce the pressure a
lot. I have never had any problems with my sprinkler vaults freezing.
Just wondering if I need to take any steps to protect the filter. It will
be under ground level in a covered plastic vault.